Blake and Mouton Managerial Grid is a style leadership model that identified five manager styles based on two dimensions viz concern for people and the concern for production. Managerial Grid uses concern for production style which is largely based on McGregor's Theory X.
Early studies on leadership were done at Ohio State University using the Leader Behavior Description Questionnaire to identify the leader's observable behaviors. Ohio State study on leadership found two behavioral characteristics of leadership - people-oriented (consideration) and task-oriented (initiating structure) leadership style.